Bimmerforums.com?
Yep, there is a lot of quality information there. There used to be a better forum but the guy that ran it got tired of fooling with it and shut it down. A lot of the contributors to that forum migrated over to bimmerforums.
There are a couple E21 guys here so it may be worth asking questions here as well.
E21 section at Bimmerforums.com is where I lived when I had my E21. A lot of the guys who were on the forum that nickst34 mentioned are on Bimmerforums now.
It was E21parts.net, I actually met Fred the owner a couple times. He was in Boone NC. He developed a couple parts for the E21 and put together a real nice ignition upgrade package. He had about a dozen E21's spread around his places and a very cool factory turbo race car. Lot's of those old school tricks and knowledge that where available on that site can be found on bimmerforums now.
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